Magazine assembly for fastener driving apparatus

ABSTRACT

A fastener driving apparatus and magazine assembly therefore including an improved construction for a fluid operated fastener driving tool adapted to receive a replaceable prefilled cartridge in the magazine assembly for automatically and sequentially feeding a plurality of fasteners in an aligned side-by-side relation into a predetermined uniform spaced and secured position on a work piece.

United States Patent [191 Buttriss 3,742,577 July 3, 1973 MAGAZINEASSEMBLY FOR FASTENE DRIVING APPARATUS Inventor: Albert T. Buttriss,Westlake, Ohio Assignee: Eaton Corporation, Cleveland, Ohio Filed: Sept.24, 1971 Appl. No.: 183,667

Related US. Application Data Division of Ser. No. 76,743, Sept. 30,1970, Pat. No.

us. Cl. 29/212 R, 29/211 R Int. Cl B23q 7/10 Field of Search 29/212 R,212 D,

29/2ll R References Cited UNITED STATES PATENTS 6/1972 Buttriss 29/212 RX Primary Examiner-Thomas H. Eager A Attorney-H. D. Gordon [5 7 ABSTRACTA fastener driving apparatus and magazine assembly therefore includingan improved construction for a v fluid operated fastener driving tooladapted to receive a replaceable prefilled cartridge in the magazineassembly for automatically and sequentially feeding a plurality offasteners in an aligned side-by-side relation into a predetermineduniform spaced and secured position on a work piece.

3 Claims, 10 Drawing Figures l ililllililftiil &5

PATENTEDJUL 3 I973 SHEEI 1 BF 3 mm N PATENTEUJUL3 ms SHEET 2 BF 3MAGAZINE ASSEMBLY FOR FASTENER DRIVING APPARATUS This is a division, ofapplication Ser. No. 76,743 filed Sept. 30, 1970, now US. Pat. No.3,672,029 patented June 27, I972.

BACKGROUND OF THE INVENTION els, flanges, or the like for use in highspeed application in the automotive, appliance, electronic and othermass-producing industries. This application relates to the co-pendingapplication to Albert T. Buttriss, Ser. No. 9,834, filed Mar. 9, I970now US. Pat. No. 3,672,738 patented June 27, 1972.

Heretofore, it has been known to provide various electromagnetic orpneumatically operated tools for driving staples, nails, tacks and thelike into a work piece. Such prior devices, however, have generallyrequired specially designed tool bodies and/or dies, headed fasteners orstrips of headed fasteners which are not only expensive to produce, butwhich do not readily lend themselves to high speed automatic applicationand/or equipment and hence, such devices do not fully realize theadvantages of high speed and ease of application to which the drivingapparatus are capable. This is particularly the situation with respectto applications wherein the tools perform a feeding operation in which aseries of fasteners are to be driven onto a work piece at spacedintervals and without damage to the surface and/or edges of the workpiece, particularly when employing fasteners of aU-shaped constructionand/or'are to be applied in relatively inaccessible locations. Further,in such prior arrangements, it is often difficult to replace a depletedsupply of fasteners so as to reduce lose parts handling and wasted'parts with a minimum of time and effort. In addition, the driving ap-SUMMARY OF THE INVENTION A fastener driving apparatus for high speed,automatic application of fasteners, such as of the U-shapedconstruction, to a work piece including, in combination, a fluidoperated driving tool and magazine assembly adapted to receive ainterchangeable, prefilled dis-- posable cartridge therefore. The'toolis preferably of a pneumatically operated construction which includes a1 body and an interchangeable magazine assembly for receiving cartridgescarrying a plurality of U-shaped fasteners mounted in side-by-siderelation for individual and sequential delivery to a work piece uponactuation of the tool. The fasteners are fed through the magazine inseparate or individual form without attachment to one another forsequential and precise alignment with the'work piece. The tool isconstructed and arranged to provide quick and easy interchangeability ofthe magazine assembly, which prevents inadvertent ejection of thefasteners from the tool in the inoperative position thereof, and whichacts to cushion the shock transmittedto the fasteners via the magazineassembly upon actuation of the tool.

As will be apparent from the foregoing, the following description andaccompanying drawings, it will be seen that the present inventionprovides a new and novel construction of a fastener driving apparatusand method which is of a high speed, simple, yet inexpensiveconstruction, and which is easy to operate and maintain for feedingfasteners in individual sequential relation from a pre-filled disposablecartridge therefore. The tool is readily portable and is constructed andarranged to readily receive the magazine assembly for holding andfeeding the fasteners in bulk from the tool upon controlled actuation ofthe trigger mechanism. The tool of the present invention quickly andefficiently applies fasteners, such as of the U-shaped construction,onto panels or flanges many times faster than by hand and eliminatessmall parts handling, eliminates parts loss, and saves on fastenerinventory. The tool has standard couplings for quick-disconnect typeattachment to a fluid supply source and the magazine assembly provides areservoir to accommodate a wide panel range of U-shaped fasteners forquick delivery. The tool of the invention is designed to install thebight portion of the fastener without contact with the work piece so asto be safe to use on porcelain, pre-painted, plastic, decorative,light-gauge panels or the like. In addition, the tool is of alightweight construction which can be used in any position without lossof efficiency, and provides maximum flexibility on production lines.Further objects and advantages of the invention will be-apparent as thefollowing description proceeds with reference to the accompanyingdrawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation view,partly in section, and partially broken away illustrating the fastenerdriving apparatus of the present invention;

FIG. 2 is a generally prespective, assembly view of the closure or footmechanism removed from the apparatus of FIG. 1;

FIG. 3 is a vertical section and side elevation, respectively,illustrating the position of a respective one of the fasteners withrespect to the dowel pin in the magazine mechanism;

FIG. 4 is a fragmentary, vertical section view illustrating one positionof the finger mechanism of the invention upon forward movement of one ofthe respective fasteners to a forward position;

FIG. 5 is a vertical section view taken along the plane of line 55 ofFIG. 1;

FIG. 6 is a fragmentary, front elevational view, on a reduced scale andpartly in section, showing the nose and finger assembly of the presentinvention;

FIG. 7 is a fragmentary, side elevational view, on a reduced scale andpartially in section illustrating another position of the fingermechanism in another forward position of a respective one of thefasteners prior to actuation of the tool;

FIG. 8 is a fragmentary, elevation view, on a reduced scale and partlyinsection, illustrating another position of the finger mechanism inanother forward position of a respective one of the fasteners uponactuation of the tool;

FIG. 9 is a fragmentary, elevation view on a reduced scale and partly insection illustrating the final installed position of a respective one ofthe fasteners with a work piece upon reciprocal movement of the plungermechanism in accordance with the invention; and

FIG. is a fragmentary, top plan view looking generally from theleft-hand side of FIG. 9.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring again to the drawingsand particularly to FIG. 1 thereof, there is illustrated the fastenerdriving apparatus or tool, designated generally at T, mounting amagazine assembly 2 which contains a plurality of fasteners F forautomatically and sequentially driving the fasteners into securedrelation with a work piece P, as illustrated in FIGS. 9 and 10. In FIG.1, the driving tool is illustrated. in its normal or static positionwith the plunger mechanism disposed in its uppermost position prior todriving a fastener F onto a work piece, as will be describedhereinafter.

As best illustrated in FIG. 1, the tool T includes a generally C-shapedbody 10 having a forward and generally vertically extending head portion12 and a rearwardly extending handle portion 14 which provides areservoir or chamber 16 to which a-pressurized fluid, such as compressedair, may be supplied from a suitable source (not shown) by means of aquickdisconnect coupling, as at 18. The rear end of the handle 14 isprovided with an integrally formed, downwardly extending leg 20 whichserves as a means for supporting the rear end of the magazine assembly2. The fasteners are fed from an interchangeable and disposablecartridge 22 into a ram guide formed in a nose assembly 24 which may bedetachably connected to the head 12 of the tool.

As shown, the head 12 of the tool includes a cavity 26 in which ismounted a sleeve forming a cylinder 28. An air return chamber 29 isdefined in the cavity by the sleeve 28 and the lower end of the sleeve28 is in communication with the chamber 29 and an open upper end thereofis in continuous communication with a port or passageway 30 formed inthe body 10. A trigger actuated control valve assembly 32 normallyconnects the passageway 30 to the atmosphere through a passageway 34formed in the hollow handle portion 14 and is operable to a position inwhich it connects the passageway 30 to the fluid chamber 16. The fluidadmitted to the passageway 30 enters the open end of the cylinder 28 anddrives a power piston 36 which is slidably mounted within the cylinder28 and which is secured to the upper end of a fastener driving blade orplunger 38 outwardly so that the lower end 40 of the plunger engages anddrives a fastener F supplied one at a time to a ram guide in the noseassembly 24 via the magazine assembly 2, as aforesaid. Upon downwardmovement of the piston 36, the air disposed within the cylinder 28 belowthe piston 36 is driven through a plurality of ports (not shown) in thelower wall of the cylinder 28 into the return air chamber 29. When thecompressed air disposed above the piston 36 is exhausted to theatmosphere under the control of the control valve assembly 32, airpressure from the return air chamber 29 is effective to act on the lowersurface of the piston 36 to return the piston from its displacedposition adjacent the lower end of the cylinder 28 to a normal positioni the tool is actuated, a trigger 48 is pivoted in a counterclockwisedirection to engage the slide valve 46 so as to close the exhaustopening 42 such that the passageway 30 and the open end of the cylinder28 are placed in communication with the fluid in chamber 16 so that thepiston 36 and plunger 38, 40 are driven downwardly to engage and drivethe fasteners delivered from the magazine assembly 2. The piston 36 ispneumatically restored to its normal position against a resilient bumper45 following the release of the trigger 48 and after a respective one ofthe fasteners has been driven by the blade 40. When the trigger 48 isreleased, the passageway 30 is connected to atmosphere through theexhaust passageway 34 and outlet port 41.

Now in accordance with the invention, a foot or closure assembly 50 isprovided for coacting fluid seating and transmitting engagement with therearward end of the magazine assembly 2. As best seen in FIGS. 1 and 2,the assembly 50 includes a rearwardly extending housing 52 detachablyconnected to the leg 20 of the body 14. The housing 52 has a cylindricalbore 54 which is open at one end and which is provided adjacent itsother end with a slot 56 which communicates with a passageway 58provided in the leg 20 which passageway, in turn, communicates with thefluid chamber 16. The bore 54 threadably receives, as at 57, a hollowbushing 60 which, in turn, receives therethrough an elongated shaft 62which extends into the bore. The shaft 62 is provided at one end with aflat 64 adapted to engage a dowel pin 66 which extends transverselythrough the bore 54 to prevent the rotational movement of the shaft inthe inoperative position thereof. A generally L-shaped passageway 68 maybe provided adjacent one end of the shaft 62 adapted to communicate withanother generally L-shaped passageway 70 provided in a closure member72. The terminal end of the shaft 62 may be provided with a transversebore 74 adapted to receive a dowl pin 76 for connecting the shaft to theclosure member. The shaft 62 may be provided with a pair of grooves 78and corresponding 0- rings 81 to provide a fluid sealing engagementinteriorly of the bushing 60. Similarly, another O-ring 83 may beprovided around the bushing 60 to provide a fluid seal adjacent the openend of the bore 54 in the installed position of the bushing 50. In theform shown, a resilient compression spring 84 is disposed around theshaft 62 as to bear at one end against the bushing 60 and at the otherend against a collar 85 held in position by a C-ring 87 received in anannular groove 89 in the shaft 62. By this arrangement, the shaft may bemanually reciprocated within the bore 54 against the resilient bias ofthe spring 84 so as to normally be held against rotation via the pin 66and flat 64. On rearward movement of the shaft 62 the flat 64 disengagesthe pin 66, to permit rotational movement of the shaft 62 about itsrotational axis within the bore 54. i

As shown, the shaft 62 is adapted to be disposed within a bore 80provided in the closure member 72 and fixedly attached thereto via pin76. The closure member 72 includes a. generally flat base 82 which has agenerally T-shaped handle 83 made integral with and extending outwardlytherefrom. The other side of the base 82 is provided with a recess 86whichis preferably of a polygonal construction and which communicateswith the passageway 70 which, in turn, communicates with the bore 80.The recess 86 has a depth sufficient to receive a resilient pad 88dimensioned to it snugly within the recess 86. The pad 88 is preferablymade of a polymeric or elastomeric material which may be fixedlyattached within the recess 86 by means of a suitable adhesive material.The pad 88 is provided with a central opening 90 which is adapted to beconcentrically disposed with respect to the outlet end of the passageway70. By this arrangement, fluid pressure introduced through passageway58, bore 54, passageway 68 and 70 is transmitted outwardly from theclosure member 72 via opening 90 in the resilient pad 88 in a selectiverotated position of the handle 83. In this connection, it will be notedthat the bushing 60 is provided with an opening or aperture 61 adaptedfor communication with the passageway 68 in the shaft 62. Moreover, asthe handle 83 is pulled outwardly the forwardmost one of the O-rings 81is drawn across the opening 61 in the bushing so as to cut off thesupply of fluid pressure from the chamber 16. The base member 82 may beprovided with a suitable plug 91 which communicates via a bore 92 which,in turn, communicates with the transverse bore 80. I

The magazine assembly 2 is fully described in the applicantsaforementioned co-pending application Ser. No. 9,834. As shown, theassembly generally comprises an inverted U-shaped casing 100 (FIG. 5)adapted to be detachably connected to a transverse housing structure 102which, in turn, may be detachably connected to the body of the tool T.The casing 100 is adapted to be received at one end within the ram guideof the nose 24 and at its other end operably connected to theresiliently actuated base 82 of the closure mechanism 50.

As shown, the casing 100 is adapted to receive a disposable cartridgemember 22 pre-filled with a plurality of fasteners F disposed inside-by-side stacked relation therein. The cartridge 22 is preferably ofa polygonal construction, in cross section, and includes at one end aclosure member 104 in the form of a flat disc or base which may beadjoined to the confronting interior surface of the cartridge by anysuitable means, such as by cementing, heat sealing, molding or the like.Preferably, the member 104 is provided with an aperture, as at 106 toenable fluid under pressure to be transmitted therethrough. The aperture106 is disposed inwardly of a flange 108 which defines a recess-likeopening which provides a pockeblike construction for coacting sealingengagement with the'resilient pad 88 of the closure mechanism 50. Inaddition, the cartridge 22 is provided with a plunger member 110disposed interiorly thereof for driving the fasteners F generallyaxially through the body of the cartridge in a direction from therearward end toward the forward end for ultimate discharge therefrominto the ram guide structure of the tool. The construction and operationof the plunger member 110 is fully described in the aforementionedco-pending application Ser. No. 9,834 now Pat. No. 3,672,738 patentedJune 27, 1972 As best seen in FIGS. 3 and 4, the fasteners F which maybe employed with the cartridge are preferably made from a strip of sheetmetal having a generally U- shaped configuration defined by a linearlyextending leg and an inclined leg 122 which extend downwardly from aninnerconnecting bight portion 124. The leg 120 is provided with a pairof longitudinal slits 126 which together define a spring arm 128 whichextends angularly inwardly toward the'opposite leg 122. The arm 128 isprovided with a central opening 130 which is preferably concentricallydisposed relative to an apertured helix 132 provided in a similarlyformed spring arm 134 in the leg 122. Preferably, the arms 128 and 134extend generally parallel with respect to one another generally betweenthe legs 120 and 122, but terminate short of the bight portion 124.Accordingly, by this arrangement, an opening or slotted area 136 isprovided in the bight portion 124 between the legs 120 and 122 adaptedto receive therethrough a dowel pin 138 which extends downwardly fromthe supporting structure 102. The leg 122 is preferably provided with anintegral outwardly extending flange 140 which facilitates snap actingcoacting engagement of the fastener with respect to the marginal edge ofthework piece P. as shown in FIG. 9. Accordingly, the upper marginalsurfaces of the bight portion 124 provide an abutment means adapted toreceive the lower blade end 40 of the reciprocal drive element 38 fordriving a respective one of the fasteners outwardly from the ram guidestructure of the nose assembly 24. Further details with respect to theconstruction and operation of the fasteners may be had by reference toUS. Pat. to R. A. Hartman et al. No. 2,672,905.

Now in accordance with the invention, the nose as sembly 24 is adaptedto be detachably connected to the head 12 of the tool to receive andguide fasteners outwardly which are received from the magazine assembly2. As best seen in FIGS. 7-9, the nose assembly 24 includes an outernose piece which may be detachably connected by bolts or the like to thehead 12. The nose piece includes an elongated channel-like ram guide 152which may be tapered at one end, as at 154, adapted to reciprocallyreceive therethrough the lower blade member 40 of the drive element 38.The ram guide 152 is dimensioned to slidably receive therein thetransverse width of the respective fasteners F so as to guide the samein a rectilinear path outwardly in a direction away from the head 12upon actuation of the blade 40. The nose piece 150 is of a generallyhollow construction and has an opening, as at 156, on the side oppositethe ram guide 152 which is dimensioned to slidably receive therein thecorresponding adjacent end of the casing 100 of the magazine assembly 2so that .fasteners discharged from the cartridge member 22 are disposedwithin the nose piece adjacent and in engagement with the guide ram 152,as seen in FIGS. 7 and 8.

The nose piece 150 is preferably provided with a 150 so as to provideagenerally polygonal shaped passageway for receiving and dischargingfasteners there- 7 through. The nose piece 150 is provided withtransverse cut-out slots 164 which together with the jaw member 160provide a jaw-like slot construction to receive therein the thickness ofthe work piece P, as seen in FIGS. 9 and 10. The slot 164 is dimensionedso as to slidably accommodate therein the thickness of the work piecetogether with the thickness of the legs 120 and 122 of the respectivefasteners. Accordingly, the ram guide 152 together with the constructionof the nose piece 150 and the lower jaw member 160 act to provide aguide structure to maintain rectilinear movement of the fastener upondischarge therethrough and into secured engagement with the work piece.Preferably, the nose piece 150 is provided adjacent its lower end with agenerally U-shaped slot 166 which provides an .access area to permitvisual observation of the thread engaging portion of the fasteners inthe installed I position thereof.

In the invention, the nose assembly 24 is provided with a resilientkeeper or retainer mechanism 170 for controlling movement of thefasteners from the magazine assembly 2 to the nose assembly 24. As bestseen in FIGS. 6-9, the mechanism 170 includes a dowel pin 172 supportedby transverse slots 174 provided in the lower jaw member 160. Aresilient guide spring member 176 is disposed around the dowel pin whichhas a first upstanding finger 178 which in the normal inoperativeposition of the tool extends generally vertically or at a slightlyinclined angle upwardly in a direction away from the dowel pin 172. Thespring is provided with a second resilient finger 180 which may beforeshortened relative to the finger 178 and which extends outwardly andgenerally parallel with respect to the casing 100 so as to beresiliently held in engagement therewith to prevent rotation of thespring relative to the dowel pi'n 172. In operation, the resilientfinger 178 is progressively rotated in biased relation in acounter-clockwise direction relative to the dowel pin'l72 uponengagement with a respective one of the fasteners so that the 1 fingeris rotated in excess of 90 upon engagement with the blade member 40 ofthe drive element 38 for driving a respective fastener through the guideram 152 onto the work piece. By this arrangement, the resilient spring176 acts to hold a column of fasteners in proper alignment within themagazine assembly 2 in the event no fluid pressure is present duringloading without regard to the gravity position of the tool; holds thefasteners in aligned position in the fluid operating position of thetool or when pressure is removed therefrom; and provides preciserectilinear movement of the fastener as it is driven forward to securedrelation with the work piece.

In a typical operation of the fastener driving apparatus of theinvention, the tool is preferably held in a vertical position with thenose assembly 24 up and the handle 83 pulled downwardly against thebiasing force of the compression spring 84 and then rotated aboutonequarter turn to the right or left which acts to cut-off the supply offluid pressure from chamber 16 to the foot pad 88 through respectivepassageways 58, 56, 54, 68, and 70. A cartridge member 22 which has beenprefilled with fasteners stacked in side-by-side relation therein maythen be inserted into the casing 100 of the magazine assembly 2 and thehandle 83 rotated back to its original position so that the compressionspring 84 acts to draw the base 82 of the closure mechanism 72 axiallyforward until the resilient foot pad 88 is brought into engagement withthe'adjacent end of the casing 100 to provide an effective fluid sealtherewith. Preferably, the fluid seal is such to allow slight leakage toeliminate the possibility of overpressurizing the magazine assemblythereby obviating the need for any auxiliary regulatory equipment.Moreover, fluid pressure is now free to enter the interior of thecartridge 22 through the aperture in the foot pad 88 for forcing theresilient plunger member forwardly and outwardly so as to move axiallythrough the cartridge and into fluid sealing engagement with theconfronting interior walls of the cartridge to effect an additional airseal for effectively forcing the fasteners progressively toward the ramguide 152. prior to movement of the fasteners through the cartridge 22,the resilient finger 178 of the spring 176 is in the generallyvertically oriented position as shown in FIG. 7. As the foot padstructure is fluidized the fasteners progressively move forwardly intothe ram guide past the dowel pin 138 so that the fasteners consecutivelymove in a step-down relation into the ram guide which rotates the springfinger resiliently in a counter-clockwise direction upon engagement ofthe bight portion 124 of the fastener by the blade member 40 of thedrive element 38, as best seen in FIG. 8. The resilient finger 178 actsto retain the fastener in the upper part of the ram guide 152 so that asthe fastener is driven outwardly through the guide via blade 40, thefinger forces the fastener against the interior wall 153 of the guidethereby to guide the fastener into proper engagement with the panel. Bythis arrangement, the fastener is maintained in an accurate linearposition to prevent any damage to the assembly tool which may result,for instance, from a misaligned fastener striking the panel edge. In theinvention, the travel of the drive element 38 and blade 40 iseffectively controlled so that the area adjacent the U-bend of thefastener will not contact the panel edge. Moreover, a space (FIG. 9) isprovided between the bight portion 124 of the fastener and theconfronting edge of the work piece to prevent any damage to the surfacethereof. The guide pin or dowel 138 effectively prevents fastenersentering the ram guide in a reversed position while the slot 164provides an effective engagement with the workpiece to steady the toolduring normal operation thereof. When the magazine assembly 2 is empty,it may simply be disposed of and another cartridge reloaded into themagazine assembly for another series of operations.

I claim: 1. A Magazine Assembly for use with a fastener driving tool ofthe type having a reciprocable fluid actuated driving member for drivingfasteners received from the magazine assembly into a nose assembly forsecurement with a workpiece, said magazine assembly includan elongated,hollow housing adapted to be detachablymounted on said tool for fluidsealing and fluid transmitting coaction at one end with said tool and infastener feeding relationship at its other end with said nose assembly;an interchangeable cartridge means mounting a plurality of fasteners inside by side relationship therein adapted to be slideably inserted intoand to be carried by said housing in the installed position thereof; I

said fluid sealing and fluid transmitting end of said housing includinga movable closure member having fluid passageway means adapted tocommunicate at one end in fluid transmitting and sealing retridge means,said closure member including a shaft rigidly fixed thereto for mountingsaid closure member to said tool, said shaft being slideably androtationally received in a bore in said tool which fluidly communicateswith said source of fluid pressure, said shaft having fluid passagestherein for establishing fluid communication between said cartridgemeans and said bore only when said shaft is in an axial and rotationalposition relative to said bore corresponding to said closure memberbeing moved towards said cartridge means for fluid sealing and fluidtransmitting coaction therewith.

2. A magazine assembly in accordance with claim 1,

including resilient means operably coacting with said shaft for biasingsaid closure member in a direction toward said cartridge means.

3. A magazine assembly in accordance with claim 1,

including means.

resilient pad means mounted on said closure member having an aperturemeans communicating adjacent one side with the passageway means in saidclosure member and adjacent its opposite side with said cartridge meansand adapted for resilient fluid sealing coaction with said cartridgemeans upon movement of said closure member toward said cartridge vUNETED STATES PATENT OFFECE CERTIFICATE 9F CORRECTIQFN Patent No. 0 577Dated ly 3 1973 I Inventor(s) BUT'I'RI'SS, ALBERT '1'.

It is certified that error appears in the above-identified patent andthat said Letters Patent are hereby corrected as shown below:

Column 9, line 7, cancel "by". Q

Signed and sealed this 25th day of December 1973. Y

. (SEAL) Attest: r I

EDWARD M. FLETCHERQJR. RENE D. TEGTMEYER Attesting Officer ActingCommissioner of Patents F R (w69) uscoMM-Dc Bosnia-p69 v p GOVERNMENTPRINTING OFFICE 959 35633l,

1. A Magazine Assembly for use with a fastener driving tool of the typehaving a reciprocable fluid actuated driving member for drivingfasteners received from the magazine assembly into a nose assembly forsecurement with a workpiece, said magazine assembly including: anelongated, hollow housing adapted to be detachably mounted on said toolfor fluid sealing and fluid transmitting coaction at one end with saidtool and in fastener feeding relationship at its other end with saidnose assembly; an interchangeable cartridge means mounting a pluralityof fasteners in side by side relationship therein adapted to beslideably inserted into and to be carried by said housing in theinstalled position thereof; said fluid sealing and fluid transmittingend of said housing including a movable closure member having fluidpassageway means adapted to communicate at one end in fluid transmittingand sealing relationship with said cartridge means and at its other endsadapted for selective fluid communication with a source of fluidpressure delivered to said tool for feeding successive fasteners throughsaid cartridge means in response to actuation of said drive member, saidclosure member being movable towards said cartridge by means for fluidsealing and fluid transmitting coaction therewith and being movableaxially and rotationally away from said cartridge means to allowinterchange of said cartridge means, said closure member including ashaft rigidly fixed thereto for mounting said closure member to saidtool, said shaft being slideably and rotationally received in a bore insaid tool which fluidly communicates with said source of fluid pressure,said shaft having fluid passages therein for establishing fluidcommunication between said cartridge means and said bore only when saidshaft is in an axial and rotational position relative to said borecorresponding to said closure member being moved towards said cartridgemeans for fluid sealing and fluid transmitting coaction therewith.
 2. Amagazine assembly in accordance with claim 1, including resilient meansoperably coacting with said shaft for biasing said closure member in adirection toward said cartridge means.
 3. A magazine assembly inaccordance with claim 1, including resilient pad means mounted on saidclosure member having an aperture means communicating adjacent one sidewith the passageway means in said closure member and adjacent itsopposite side with said cartridge means and adapted for resilient fluidsealing coaction with said cartridge means upon movement of said closuremember toward said cartridge means.